<template>
    <div class="home" style=" padding: 10px">
        <div class="flex-bar">
            <!--  搜索区域  -->
            <div style="margin: 10px 0">
                <el-input v-model="search" placeholder="请输入关键字" style="width: 300px" clearable></el-input>
                <el-button type="primary" style="margin-right:20px; margin-left: 5px" @click="load">查询</el-button>
            </div>
            <!--            <div style="flex-grow:1; max-width: 60%"></div>-->
            <div style="margin: 10px 0">
                <el-button type="primary" @click="add" v-if="user.role === 1">新增</el-button>
            </div>
        </div>
        <el-table
                :data="tableData"
                border
                stripe
                style="width: 100%">
            <el-table-column
                    prop="id"
                    label="ID"
                    sortable/>
            <el-table-column
                    prop="title"
                    label="标题"/>
            <el-table-column
                    prop="author"
                    label="作者"/>
            <el-table-column
                    prop="time"
                    label="时间"/>
            <el-table-column
                    label="操作">
                <template #default="scope">
                    <el-button @click="detail(scope.row)" size="mini">详情</el-button>
                    <el-button @click="handleEdit(scope.row)" size="mini">编辑</el-button>
                    <el-popconfirm title="确认删除吗？" @confirm="handleDelete(scope.row.id)">
                        <template #reference>
                            <el-button type="danger" size="mini">删除</el-button>
                        </template>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>
        <!--  分页  -->
        <div style="margin: 10px 0">
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="currentPage"
                    :page-sizes="[5, 10, 20]"
                    :page-size="pageSize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>

            <el-dialog
                    title="提示"
                    v-model="dialogVisible"
                    width="50%">
                <el-form :model="form" label-width="120px">
                        <el-form-item label="标题">
                        <el-input v-model="form.title" style="width: 50%;"></el-input>
                    </el-form-item>
                    <div id="div1">

                    </div>
                </el-form>
                <template #footer>
          <span class="dialog-footer">
            <el-button @click="dialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="save">确 定</el-button>
          </span>
                </template>
            </el-dialog>

            <el-dialog
                    title="新闻详情"
                    v-model="vis"
                    width="50%">
                <el-card>
                    <div v-html="details.content" style="min-height: 100px"></div>
                </el-card>

            </el-dialog>
        </div>
    </div>

</template>

<style>
    .flex-bar{
        display: flex;
        flex-direction: row;
        align-items: center;
    }
</style>


<script>
    import E from 'wangeditor';
    import request from "../utils/request";

    let editor;

    export default {
        name: 'News',
        components: {},
        data() {
            return {
                form: {},
                dialogVisible: false,
                search: '',
                currentPage: 1,
                pageSize: 10,
                total: 0,
                tableData: [],
                vis: false,
                details: {},
                user: {},
            }
        },
        created() {
            let userStr = sessionStorage.getItem("user") || "{}";
            this.user = JSON.parse(userStr);

            //请求服务端，确认当前登录用户的合法信息
            request.get("/user/" + this.user.id).then(res => {
                if (res.code === '0') {
                    this.user = res.data;
                }
            });
            this.load();
        },
        methods: {
            detail(row) {
                this.details = row;
                this.vis = true;
            },
            createDom() {
                //关联弹窗里面的div，new一个editor对象
                editor = new E('#div1')

                editor.config.uploadImgServer = 'http://localhost:9090/files/editor/upload';
                editor.config.uploadFileName = 'file';
                editor.create();
            },
            filesUploadSuccess(res) {
                console.log(res);
                this.form.cover = res.data;
            },
            load() {
                request.get("/news", {
                    params: {
                        pageNum: this.currentPage,
                        pageSize: this.pageSize,
                        search: this.search
                    }
                }).then(res => {
                    console.log(res)
                    this.tableData = res.data.records;
                    this.total = res.data.total;
                })
            },
            add() {
                this.dialogVisible = true;
                this.form = {};
                if (this.$refs['upload']) {
                    this.$refs['upload'].clearFiles();  //清除历史文件列表
                }
                this.$nextTick(() => {
                    if (editor == null) {
                        this.createDom();
                    }else {
                        editor.destroy();
                        this.createDom();
                    }
                })

            },
            save() {
                this.form.content = editor.txt.html(); //获取到编辑器里的值

                if (this.form.id) { //更新
                    request.put("/news", this.form).then(res => {
                        console.log(res);
                        if (res.code == '0') {
                            this.$message({
                                type: "success",
                                message: "更新成功"
                            });
                            this.load();   //刷新表格的数据
                            this.dialogVisible = false;  //关闭弹窗
                        } else {
                            this.$message({
                                type: "error",
                                message: res.msg
                            })
                        }
                    })
                } else {   //新增
                    let userStr = sessionStorage.getItem("user") || "{}";
                    let user = JSON.parse(userStr);
                    this.form.author = user.nickName;
                    request.post("/news", this.form).then(res => {
                        console.log(res);
                        if (res.code == '0') {
                            this.$message({
                                type: "success",
                                message: "新增成功"
                            });
                            this.load();   //刷新表格的数据
                            this.dialogVisible = false;  //关闭弹窗
                        } else {
                            this.$message({
                                type: "error",
                                message: res.msg
                            })
                        }
                    })
                }
            },
            handleEdit(row) {
                this.form = JSON.parse(JSON.stringify(row));
                this.dialogVisible = true;
                this.$nextTick(() => {
                    if (editor == null) {
                        //关联弹窗里面的div，new一个editor对象
                        editor = new E('#div1');
                        editor.config.uploadImgServer = 'http://localhost:9090/files/editor/upload';
                        editor.config.uploadFileName = 'file';
                        editor.create();
                        editor.txt.html(row.content);
                    }else {
                        editor.destroy();
                        //关联弹窗里面的div，new一个editor对象
                        editor = new E('#div1');
                        editor.config.uploadImgServer = 'http://localhost:9090/files/editor/upload';
                        editor.config.uploadFileName = 'file';
                        editor.create();
                        editor.txt.html(row.content);
                    }
                })
            },
            handleDelete(id) {
                console.log(id);
                request.delete("/news/" + id).then(res => {
                    if (res.code == '0') {
                        this.$message({
                            type: "success",
                            message: "删除成功"
                        });
                    } else {
                        this.$message({
                            type: "error",
                            message: res.msg
                        })
                    }
                    this.load();
                })
            },
            handleSizeChange(pageSize) {    //改变当前每页个数触发
                this.pageSize = pageSize;
                this.load();
            },
            handleCurrentChange(pageNum) {  //改变当前页码触发
                this.currentPage = pageNum;
                this.load();
            }
        }
    }
</script>